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Regulatory Development and Retrospective Review Tracker

Effluent Guidelines and Standards for Oil and Gas Extraction Point Source Category

a.k.a. ELG for Oil and Gas Extraction

RIN: 2040-AF35 (What's this?)

Docket No.: EPA-HQ-OW-2011-0334 (What's this?)

Current Phase: Proposal (What's this?)

Recent advances in the well completion process, combining hydraulic fracturing and horizontal drilling have made extraction of oil and natural gas from unconventional oil and gas (UOG) resources more technologically and economically feasible. UOG process wastewater may be generated in large quantities and contains constituents that are potentially harmful to human health and the environment.

Process wastewater from UOG wells often contains high concentrations of total dissolved solids (TDS) (salt content). The wastewater may also contain various organic chemicals, inorganic chemicals, metals, and naturally-occurring radioactive materials (NORM). These large quantities of potentially harmful wastewater create a need for appropriate wastewater management infrastructure and management practices. This regulation would strengthen existing federal controls on pollutant discharges from certain oil and gas extraction facilities by establishing pretreatment standards that would prevent the discharge of pollutants in process wastewater from on-shore unconventional oil and gas extraction facilities to publicly owned treatment works (POTWs).

NPRM: Sent to OMB for Regulatory Review11/19/2014
NPRM: Received by OMB11/19/2014
NPRM: Regulatory Review Concluded03/30/2015
NPRM: Comment Period Open04/07/2015
NPRM: Published in FR04/07/2015
NPRM: Public Meeting05/29/2015
NPRM: Comment Period Extension Published in FR06/02/2015
NPRM: Comment Period Closed06/08/2015
NPRM: Comment Period Closed with Extension07/17/2015
Final Rule: Published in FR08/2016 (projected)

Potential Effects

Of the potential effects described in Reg DaRRT, none are anticipated at this time.

Participate / Learn More Regulatory Review

Some of EPA's rulemakings undergo regulatory review (What's this?), as prescribed by Executive Order 12866 and coordinated by the Office of Management and Budget (OMB). The following list describes which of this rulemaking's stages have completed review and published in the Federal Register, if any, and provides links to the review documents where available. Consult the "Timeline" section of this Web page for the dates of each review.

  • NPRM - No Information Available.
Citations & Authorities

Federal Register Citations

Code of Federal Regulations (CFR) Citation
40 CFR 435

Legal Authority
33 U.S.C. 1251 et seq Clean Water Act


This site provides summaries of priority rulemakings and priority retrospective reviews of existing regulations. We update most of the site at the beginning of each month, though some data is updated more frequently if it is time sensitive. The information on this site is not intended to and does not commit EPA to specific conclusions or actions. For example, after further analysis, EPA may decide the effects of a rule would be different or it may decide to terminate a rulemaking.

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